Help and Homework

Week 3 Objectives:

Objective A:    – Circuit practice: buzzer and slide switch

Objective B:    – Wire a DIP switch to your building’s LEDs

Objective C:    – Add a doorbell to your building

components needed:
2 AAA battery pack
1x Buzzer
1x Green LED
1x Blue LED
1x SPDT slide switch
7x M-M wire

Objective A: Circuit practice!

Build both of the following circuits. Circuit 1 should turn on the buzzer when you press the button. Flipping the switch in Circuit 2 should turn on either the blue LED or the green LED.

Buzzers have a positive leg and a negative leg just like LEDs. In this diagram, the + sign marks the positive side. The positive leg of the buzzer is also slightly longer.

components needed:
1x DIP switch
4x M-M wire

already on building:
2 AAA Pack
4x LEDs with M-F wires

Objective B: DIP Switch

Last week you added 4 LEDs to your building; now connect them to a 4 position DIP switch so that you can turn each one on and off individually.

Test your circuit by using the white sliders on the DIP switch to turn your LEDs on and off. Once all 4 connections are working, use a little bit of hot glue to keep the switch from popping out of your breadboard.

Glue between the side of your switch and the center gap of your breadboard – try to avoid plugging up any of the breadboard rows.

DIP stands for Dual In-line Package. It refers to any component with a rectangular body and two (dual) rows of pins. This doesn’t always have to be a switch – can you think of another part from the Component Shack that has this shape?

components needed:
1x Buzzer
1x Momentary switch
2x M-F wire
1x F-F wire

already on building:
2 AAA Pack

Objective C: Doorbell

Make a doorbell for your building with a buzzer and a momentary switch.

Connect a M-F wire to the negative leg of the buzzer.
Connect a M-F wire to one side of the button.
Connect a F-F wire from one side of the button to the positive leg of the buzzer.

Carefully hot glue the wires in place. Attach the doorbell to your building, and use the diagram below to add it into your circuit.

Homework – Coming Soon

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